The house in the 4400 block of 51st Street began burning for unknown reasons about 1:30 p.m., according to the San Diego Fire-Rescue Department. Engine crews arrived to find the rear of the single-story residence fully engulfed in flames, SDFRD spokesman Maurice Luque said.San Diego police alerted three people in the home to the fire, and the trio got out unharmed, Luque said. Officers then began clearing people from the nearby apartment building.Two patrolmen suffered smoke inhalation during the evacuation, and one of them also sustained superficial burns to one of his arms, according to Luque. Paramedics transported both to UCSD Medical Center in Hillcrest.It took firefighters about 20 minutes to subdue the blaze, which charred the outside of the multi-residence building and also burned a fence and a junked car in the back yard of the home.Investigators set the monetary losses at $200,000 to the house, $100,000 to items inside it and $30,000 to the scorched apartment building.The American Red Cross was contacted to help arrange emergency lodging for 11 people members of two families displaced from the house. It was not immediately clear if any of the adjacent apartment dwellers would have to find someplace else to stay pending repairs to the structure.A small dog that apparently cowered underneath the home as it burned also managed to escape injury, though firefighters had to coax the canine from its hiding place, Luque said.The cause of the fire was under investigation.